from __future__ import annotations

from collections.abc import Mapping

import pytest

from pdoc.render_helpers import edit_url
from pdoc.render_helpers import module_candidates
from pdoc.render_helpers import possible_sources
from pdoc.render_helpers import qualname_candidates
from pdoc.render_helpers import relative_link
from pdoc.render_helpers import split_identifier
from pdoc.render_helpers import to_html


@pytest.mark.parametrize(
    "current,target,relative",
    [
        ("foo", "foo", ""),
        ("foo", "bar", "bar.html"),
        ("foo.foo", "foo", "../foo.html"),
        ("foo.foo", "bar", "../bar.html"),
        ("foo.bar", "foo.bar.baz", "bar/baz.html"),
        ("foo.bar.baz", "foo.qux.quux", "../qux/quux.html"),
    ],
)
def test_relative_link(current, target, relative):
    assert relative_link(current, target) == relative


@pytest.mark.parametrize(
    "context,candidates",
    [
        ("", ["qux"]),
        ("foo", ["foo.qux", "qux"]),
        ("foo.bar", ["foo.bar.qux", "foo.qux", "qux"]),
    ],
)
def test_qualname_candidates(context, candidates):
    assert qualname_candidates("qux", context) == candidates


@pytest.mark.parametrize(
    "identifier,current_module,candidates",
    [
        ["foo.bar.baz", "qux", ["qux", "foo", "foo.bar", "foo.bar.baz"]],
        ["foo.bar.baz", "foo.bar", ["foo.bar", "foo", "foo.bar.baz"]],
        ["foo.bar.baz", "foo", ["foo", "foo.bar", "foo.bar.baz"]],
    ],
)
def test_module_candidates(identifier, current_module, candidates):
    assert list(module_candidates(identifier, current_module)) == candidates


@pytest.mark.parametrize(
    "modulename,is_package,mapping,result",
    [
        ["demo", False, {"dem": "abc"}, None],
        [
            "demo",
            False,
            {"demo": "https://github.com/mhils/pdoc/blob/master/test/testdata/demo"},
            "https://github.com/mhils/pdoc/blob/master/test/testdata/demo.py",
        ],
        [
            "demo",
            True,
            {"demo": "https://github.com/mhils/pdoc/blob/master/test/testdata/demo/"},
            "https://github.com/mhils/pdoc/blob/master/test/testdata/demo/__init__.py",
        ],
    ],
)
def test_edit_url(
    modulename: str, is_package: bool, mapping: Mapping[str, str], result: str | None
):
    assert edit_url(modulename, is_package, mapping) == result


@pytest.mark.parametrize(
    "all_modules,fullname,result",
    [
        [["a", "a.b", "c"], "a.b.c.d", ("a.b", "c.d")],
        [["a", "a.b", "c"], "a.c.b.d", ("a", "c.b.d")],
    ],
)
def test_split_identifier(all_modules, fullname, result):
    with pytest.warns(DeprecationWarning):
        assert split_identifier(all_modules, fullname) == result


@pytest.mark.parametrize(
    "all_modules,fullname,result",
    [
        [["a"], "a.B", [("a", "B")]],
        [["a", "a.b"], "a.b", [("a.b", "")]],
        [["a"], "a", [("a", "")]],
        [["a", "a.b"], "a.b.c.d", [("a.b.c", "d"), ("a.b", "c.d")]],
    ],
)
def test_possible_sources(all_modules, fullname, result):
    assert list(possible_sources(all_modules, fullname)) == result


def test_markdown_toc():
    """
    markdown2 has this weird property that it return a str-like object with a hidden `toc_html` attr.

    It's easy to introduce a `.strip()` in there and this gets washed away, so let's test that it works properly.
    """
    assert to_html("#foo\n#bar").toc_html  # type: ignore


@pytest.mark.parametrize(
    "md,html",
    [
        (
            "https://example.com/",
            '<p><a href="https://example.com/">https://example.com/</a></p>\n',
        ),
        (
            "<https://example.com>",
            '<p><a href="https://example.com">https://example.com</a></p>\n',
        ),
        (
            '<a href="https://example.com">link</a>',
            '<p><a href="https://example.com">link</a></p>\n',
        ),
        (
            "[link](https://example.com)",
            '<p><a href="https://example.com">link</a></p>\n',
        ),
        (
            "See the [Python home page ](https://www.python.org) for info.",
            '<p>See the <a href="https://www.python.org">Python home page </a> for info.</p>\n',
        ),
        (
            "See https://www.python.org.",
            '<p>See <a href="https://www.python.org">https://www.python.org</a>.</p>\n',
        ),
        (
            "See **https://www.python.org**.",
            "<p>See <strong>https://www.python.org</strong>.</p>\n",
        ),
    ],
)
def test_markdown_autolink(md, html):
    assert to_html(md) == html